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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#ifndef QT3DS_RENDER_THREADED_IMAGE_LOADER_H
#define QT3DS_RENDER_THREADED_IMAGE_LOADER_H
#include "Qt3DSRender.h"
#include "foundation/Qt3DSRefCounted.h"
#include "foundation/Qt3DSDataRef.h"
#include "render/Qt3DSRenderBaseTypes.h"
namespace qt3ds {
namespace render {
struct ImageLoadResult
{
enum Enum {
Succeeded,
Failed,
};
};
class IImageLoadListener : public NVRefCounted
{
protected:
virtual ~IImageLoadListener() {}
public:
virtual void OnImageLoadComplete(CRegisteredString inPath,
ImageLoadResult::Enum inResult) = 0;
virtual void OnImageBatchComplete(QT3DSU64 inBatch) = 0;
};
typedef QT3DSU32 TImageBatchId;
class IImageBatchLoader : public NVRefCounted
{
protected:
virtual ~IImageBatchLoader() {}
public:
// Returns an ID to the load request. Request a block of images to be loaded.
// Also takes an image that the buffer system will return when requested for the given
// source paths
// until said path is loaded.
// An optional listener can be passed in to get callbacks about the batch.
virtual TImageBatchId LoadImageBatch(NVConstDataRef<CRegisteredString> inSourcePaths,
CRegisteredString inImageTillLoaded,
IImageLoadListener *inListener,
NVRenderContextType type,
bool preferKTX) = 0;
// Blocks if any of the images in the batch are in flight
virtual void CancelImageBatchLoading(TImageBatchId inBatchId) = 0;
// Blocks if the image is currently in-flight
virtual void CancelImageLoading(CRegisteredString inSourcePath) = 0;
// Block until every image in the batch is loaded.
virtual void BlockUntilLoaded(TImageBatchId inId) = 0;
// These are called by the render context, users don't need to call this.
virtual void BeginFrame() = 0;
virtual void EndFrame() = 0;
static IImageBatchLoader &CreateBatchLoader(NVFoundationBase &inFoundation,
IInputStreamFactory &inFactory,
IBufferManager &inBufferManager,
IThreadPool &inThreadPool, IPerfTimer &inTimer);
};
}
}
#endif
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